Excavating-machine.



P. D. CONVERSE.

EXCAVATING MACHINE.

APPLICATION FILED 050.11.1911.

Patented Oct. 19, 1915.

2 SHEETS-SHEET I.

0.. WASHINGTON D c P. D. CONVERSE.

EXCAVATING MACHINE.

APPLICATION 111.51) DEC. 11, 1911.

1,157,209. Patented 001;. 19, 1915.

2 SHEETS-SHEET 2.

COLUMBlA PLANOGRAPH CCLJVASHINGTON. D. c.

, T all'whom .it'mjay concern:

PEARL. D. oonvnnsn, or COLUMBUS, OHIO.

\ EXCAVATING-MA'CHINE.

" Be it known. that I, PEARL D. CONVERSE,

a citizen of the'Unit-ed States, residing at I Columbus, in the county of- Franklin and Z State of Ohio, have invented certain new and useful Improvements in Excavating- Machines, of which the following ,is aspecification.

My invention and complemental dumping structure designed to dump the excavated material in any direction. I 1

My invention is believed to be structurally and functionally superior to anything hitherto known because of the provision of specialfeatures.

A prime one of these features resides in the provision of elevating structure of a type calculated to and acting to'compensate for the inequalities in the 'material fed thereto by the plow blades.

Difiiculties common to machines of this type reside in the inevitability of digging stones or lumps of sod of an excessively large size. It is designed to effectually overcome all danger of breakage from the gathering of such excessively large lumps or stones. I

In addition; it is aimed to provide a structure having a means for positively insuring conduction of the plowed" material that practically all danger of accidental re- Y turn ofthe material will be obviated. I desirably accomplish this'by the provision of a plate introduced between the plow blades and the true point of effective elevation.

' invention further contemplates the provision of pl'ow blades-of such a nature and form. that the soil plowed will hardly beturnedover, but wifll'l'iej affected as'by a scoop.) The scooping action is" furthermore effected 'by blades calculated to and effective to confine the'plowed material and preclude escape of the material laterally from such blades. In theefi'ectuation of this scooping action, I' desirably utilize. a rooter point which, is adj'ustably mounted in connection with the pl'ow blades and is capable of longitudinal adjustment to compensate for wear; In addition, v adjustingth'e vertical position of the plow Specification of Letters Patent.

relates to excavating machines and is particularly designed to --pro-. vide an improvement in excavating machines of" the type employing elevating structure I utilize mechanism for Patented Oct. 19, 1915.

Application filed December 11, 1911.-l Serial No. 665,181.

blades and also for adjusting inclination thereof. a The preferred embodiment of my invention is shown in the accompanying drawings, in which similar characters of reference designate corresponding parts, and in which: Y

Figure 1 is. a side elevation of my assembled machine, Fig. 2 is a plan view of the structure shown in Fig. 1 and Fig.8 is a the angle of detail view showing the lower end of the elevator structure and" of the plow blade.

My excavating I 'machine comprises a frame 1, supported 1n a suitable manner upon wheels '2, the frame itself carryinga seat 6 conveniently located with respect to the adjusting mechanism to be presently described. Mounted upon the forward portion of the frame is a supplemental framework 7 desirably of Y-form and carrying at'its open end a casing 80f a box-like formation. This casing 8 is constructed to removably support twin plow blades 9 audit) and an upwardly inclined throat plate 11 for a purposeto be hereinafter described. Extending through such'throat plate and to a point between the cutting edges of the twin plow blades, is a rooter point 12 which has its opposite terminus provided with a plurality ofspaced apertures 13 coacting with a pin 1a extending through registering holes 15 in the channel member 16. It will be understood that the plurality of holes 13 and thepin 14L permit of a ready longitudinal adjustment of the rooterpoint to com pensate for wear necessarily resulting from the. normalaction of-the excavator. The

box-like formation 8"is desirably reinforced and'stiffenedin its position by braces 17 and 18 which prevent the tendency to lateral wabbling the former being pivotally supported at one endto the box 8 and connected a'tits other end, as regards rear ward movement, to the hanger 17*, while the latter is rigidly'connected at both ends to the frame 7 and box'x8. The front end of the Y-frame is supported upon the lower end of a rack 20 which extends into cooperative relation-with a pinion shaft driven by a pinion 21, a worm 22-under the control of a rod 23 and handle 24:. The rear end of the Y-frame is supportedby links 25 connected at their lower ends to flange members 26 and at their upper endsto a rack 27 mov able'under the controlof a pinion 28 m0unt= slidably Y and is provided with a pedal formation'33."

or other type of brake such as shown-at-31.

'l his brake isd sirably maintained normally in operative position by a coil' i v The framework '34 isfin the nature'of a skeleton framework serving as afoot. rest,

' supplemental seat 6. J

forthe operator when he is seated upon the The elevator structure of my :invention,

desirably comprises atrough35, secured'at.

its lower end to the box-like framework 8 and having the weight ,ofits upper end ultimately carried by, the shaft 36.- .This trough is desirably slightly curved downwardly, at its'entr'ance end. as at 3'1 and has its upper end "bent substantially concentric witlifthe periphery of the said supporting shaftas'at 38. Carried from the shaft, 36 and atits,

lowerrend upon the box-like frameworks isan endless carrier structure 39,,Which disposed to traveljwithin the trough 35,.

moving up the base thereof. -This endless carrier may be of any preferred type, but,

it is desirably of substantially one-half V a the height of the trough. -The conveyer chains and the framework 49 thereof are desirably supported at their lower ends upon a shaft tl whi ch in turn ispermanently and rotatably mounted upon the box-like framework 8. It will therefore be seen that the lower end of thisiconveyer element has a be further explained subsequently in this plate. lt is immaterial whether ornotthere;

are excessively vlargelu nps or stones upon; a the lower face of tliethroatr plate, for the i reason that. the conveyerfmentioned, has a. comparatively permanent support and the character of its support'at its upper endwill specification; Complemental to the de-' scribed conveyer structure 'is a superposed' conveyer element having its upper end permanentlyi supported upon a shaft 42 which shaft rests in bearings of any desired form securely fastened to the head frame. This conveyer. structure comprises side frame pieces 43 of channel form pivotally supported upon said shaft. and carrying in their lower ends, through'the medium of plates 7 43% a second shaft 4:4; with sprockets 4:5. The

' upper sprockets are shown at 46. ..The two conveyers are driven in any preferred manner from the'wheels of the excavatingvmachine, but adetail description of this mech angularlylori; simply singularly. It will also be apparent that ther sod cutter andfthe rooter point may "be; made more 011 less;

' points andfthe .rooter point serve to scoop 8 7 limited by-pins 47 carried upon the boa-like frame'WOrlKSP'The construction or the up- 'pe'r end, of 's the lower "conveyer comprises links 46? rotatably' carryingthe head shaft '36 at its lower .end andpivotally connected at its upper end to. the head shaft 42of the upper conveyer. From the foregoing de' scription, it willbe seen that the upp r o -T I eyerhas a statienaryihead shaft support and an oscillatory'foot shaft support, swing ing about the head, shaft'asa pivot, while the lowerjjconveyerfhas a stationary foot support in the box-like structure 8 and a mov- I able head support 46?, pivotally connected to the head shaft .42 ofithe. upper conveyerand controlled by the vertical movements of v the entire box-like structu1jej8.

In operation of my invention ortheparts; thereof' so far described; the twini plow a determinate quantity .offlthe" dirt or i'naterial being e cavated. .The formation Of'tllfi twinjplow blades isfsuch that there V is no lateral escape-of anymaterial portion 7 V of the dirt or material being excavated and o Y I such mater alls conducted rearwardly upon 7 such plow blades to the'lower ifacelofthe v throat plate. 'lThe upper or superposed conveyer element then comes into play and serves to move the material upthe throat tendency to and is capable of climbing up upon the materi'al and thus compensating for such inequalities. Still further action of the end thereof into the troughl35f The two conveyer elements then" become comples. f mentally effective. and positively elevatelthe dirt theeiitire length of the trough. Itwill i r a be understood; that the effective, operation '7 "of the structure outlined may be regulated in a measureby the adjustment of theplow.

blades either-vertically .or vertically {and Y 1 efi'ective by the .adjustinentsfmentioned.

' anism is not enteredinto, for the reason that it 'isnot considered of particul'ar' im- 'portanc'e in this invention. The essential features of thestruc'ture ofthis upper con.-

. of the conveyer and frame pieces extend downwardlyabovethe throat plate 11,"but

V are capable. of an upward swinging move- T ment upon the pivotal support mentioned. he da ned ement .Of t is e rer ti Should it be desired to lower 'bl&d S,-theTliandwheelg30 isopera tedwhieh lowers the entire box like'st'ructure 8throughl',

the medium of'the rack 27, pinion 28 and rods 25. .Then by turning the handle-a24jthe forward; end -of' the Y-frame' is [lowered through' the rod 23, rack 20.and pinion'2l} By this means any desired angle of the plowblades may be gotten. Duringthe lowering of, the box Iikestructure-S, the foot shaft of the upperconveyer is allowed tomove freely within this structure since "it isin no Way, connected thereto and swings about the head ea as? are. T e rssh t o he the difference in elevation of the foot shaft.

It is of course apparent that the trough 35 and its supporting frame will also change positions during this operation.

What-I claim, is

1. An excavating machine comprising superposed elevating elements, each of said elements having one end pivotally mounted, said pivotal connections being at opposite endsof said elements, and means whereby one end of one of said elements is movable about thecorresponding end ofthe adjacent elevating element as a center.

2. An excavating machine comprising superposed elevating elements, the'upper of said elements having its upper end pivotally supported and its lower end movable about the upper end as a center, the lower of said elements having its lower end pivotally supported and its upper end movably mounted, and means whereby the up-' per end of-the lower elements is movable about the pivoted end of the upper element as a center when the lower end of the lower element is given movement with respect to the excavator.

3. An excavating machine comprising superposed elevating elements, the upper of said elements having its upper end pivotally supported and its lower end movable about the upper end as a center, and a link connection between the upper ends of said elements, the said upper end of the lower element being thereby movable about the upper end of the upper element as a center, the .lower end of the lower element being pivotally supported.

4. An excavating machine comprising su- Gopies of this patent may be obtained for perposed elevating elements, a confining casing adjacent the lower ends of said elements,

the lower end of the lower of said elements being pivotally mounted upon said casing and having its upper end movably supported, the upper end of the upper of said elements being pivotally mounted and having its lower end. freely movable within said casing about its upper end as a center, and

a throat plate carried by said casing and ex tending upward between the lower ends of said elements. I

5. An excavating machine comprising superposed elevating elements, a confining casing adjacent the lower ends of said elements, the lower end of the lower of said elements being pivotally attached to said casing, the upper end of the upper ofsaid elements bein pivotally mounted and having its lower enl freely movable within said casing about the upper end as a center, a link connection between the upper end' of'said upper element and the upper end of said lower element, a trough'within which said elements operate, and a throat plate carried by said casing and extending upward between the lower ends of said elements.

6. An excavating machine comprising a trough, a conveyer operating along the base of said trough, a frame for said conveyer pivotally secured at its lower end and m0vable at its upper end, a complemental superposed conveyer, and a frame for said superposed conveyer pivotally secured at its upper end and having an upward swinging capability at its lower end about the upper end as a center.

In testimony whereof I aflix my signature in presence of two witnesses.

' PEARL D. CONVERSE.

Witnesses:

WALTER E., S. Book, A. L. PHELPs.

five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

